EP 2873877 B1 20170104 - Self-drilling expansion fastener and method of forming same
Title (en)
Self-drilling expansion fastener and method of forming same
Title (de)
Selbstbohrendes Ausdehnungsbefestigungselement und Verfahren zur Bildung davon
Title (fr)
Fixation de dilatation autotaraudeuse et son procédé de fabrication
Publication
Application
Priority
EP 13193389 A 20131118
Abstract (en)
[origin: EP2873877A1] A self-drilling expansion fastener (20) is integrally formed of a sheet metal material for locking two or more sheet workpieces together, and includes an expansion structure (21) and a drill structure (30). The expansion structure (21) has a plurality of internal threads (24) and force-distributing bars (25). The drill structure (30) has a chip guard (31) for covering a head of the expansion structure (21), and a drill (32) forward projected from the chip guar (31) for self-drilling a hole. When an externally threaded element is screwed into the expansion structure (21) to mesh with the internal threads (24), the force-distributing bars (25) are brought to expand outward and are finally compressed into a folded state to thereby tightly lock the sheet workpieces to one another. A method of forming the self-drilling expansion fastener (20) is also disclosed.
IPC 8 full level
F16B 13/06 (2006.01)
CPC (source: EP)
F16B 13/002 (2013.01); F16B 13/061 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2873877 A1 20150520; EP 2873877 B1 20170104; ES 2620003 T3 20170627; PL 2873877 T3 20170929; PT 2873877 T 20170222
DOCDB simple family (application)
EP 13193389 A 20131118; ES 13193389 T 20131118; PL 13193389 T 20131118; PT 13193389 T 20131118